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Author Topic: Nspire 2.1 out, don't install it!  (Read 84775 times)

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Offline ACagliano

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Re: Nspire 2.1 out, don't install it!
« Reply #120 on: July 18, 2010, 12:45:58 pm »
Push-to-Test was the first indicator of what was to come. And if there's a will, there's a way. If we could crack PTT, then we can crack this. Just a little more work.
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Offline Silver Shadow

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Re: Nspire 2.1 out, don't install it!
« Reply #121 on: July 18, 2010, 01:33:47 pm »
Hmmm... I've read the comments on Slashdot, and I noticed that many people got it wrong. They think that we want to hack the Nspire to be able to cheat on tests, whereas our real purpose is just to make it possible to program on it.
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Offline Deflect

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Re: Nspire 2.1 out, don't install it!
« Reply #122 on: July 18, 2010, 01:47:11 pm »
I think we need to take charge and start factoring the keys like we did with the 83/83+/84, ect. Maybe we'll get lucky and it won't end up taking 10 years. We have OpenCL and powerful gfx cards now (CUDA sucks!) I'd be willing to donate all of my spare CPU/GPU cycles and so will most of the computers at my college (Whether they like it or not! Haha).

We can do this together if we all rise up and take a stand!
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Offline DJ Omnimaga

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Re: Nspire 2.1 out, don't install it!
« Reply #123 on: July 18, 2010, 01:51:22 pm »
@Silver Shadow yeah x.x

This isn't to mention on tests, either the questions will render the calc cheat programs useless (questions where you must write down the entire solution to the math problem) or teachers will clear your memory/lock down your calc before the exam start

@Deflect I wonder what would be a good way to get as many people together as possible to factor the keys, especially for something like calculators, which not a lot of people outside the TI community care about when it comes to 3rd party dev? If we got enough people (and computers) together, maybe it could be possible.
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Offline Deflect

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Re: Nspire 2.1 out, don't install it!
« Reply #124 on: July 18, 2010, 02:32:51 pm »
People care (maybe not as much as us) but they care! If we make it easy to run the program, and write up a story appealing to our fellow hackers about why its important to maintaing OUR rights as hobbists, tinkerers, and programmers, then people will run it and slashdot it.

This calculator is a tool for learning, and learning BASIC, and assembly to write programs and games by FAR did that for me! It shaped me into the person I am today!

I just can't let the generation after ours as screwed up as they already as they are, not have the same experiences!  ;)
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Offline DJ Omnimaga

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Re: Nspire 2.1 out, don't install it!
« Reply #125 on: July 18, 2010, 02:48:21 pm »
Well... one thing that encourages me is that non-calc programmers care a lot about freedom and rights. That, combined with pro-open-source people, could be enough to gather people together to help factoring the keys or something like that. Back when the z80 TI OS keys were factored, a lot of people joined UTI (where was located the key factoring discussion) and wanted to help.

I hope we can manage to allow TI-Nspire users to be able to do what we could do on the T-82, 85 and 92 (ASH, ZShell and Fargo). Just seeing a 90 MHz platform not even be able to do something the 83+ can is pathetic.

That said, I agree the program needs to be easy to run. It also need to be cross-platform, since a lot of people use Windows or Linux and some only have access to Mac.
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Offline Deflect

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Re: Nspire 2.1 out, don't install it!
« Reply #126 on: July 18, 2010, 02:59:12 pm »
Another reason why it'd have to be open source is that people could say devote some cluster computing time to it off an Amazon Cluser or Rackspace Cloud deal. One thing thats really great about it is that if you build it, they will come!

If they try to stop us like they did last time then I think the EFF would again send out letters to TI warning them against their baseless threats as were not making any money off of this, and they are prohibiting legitimate tinkering on OUR hardware.

Quote
"This is not about copyright infringement. This is about running your own software on your own device -- a calculator you legally bought,"
- EFF Civil Liberties Director Jennifer Granick

I don't think I could have put it better myself!  :)

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Offline DJ Omnimaga

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Re: Nspire 2.1 out, don't install it!
« Reply #127 on: July 18, 2010, 03:06:43 pm »
Oh wow I remember that "If they build it, they will come" thing now o.o

weird that I forgotten this, being a former Montreal Expos fan :P

And yeah, true. One concern I have, though: I remember hearing something on UTI or an IRC channel once, that claimed that while doing this with the 8x keys, it would be illegal with the Nspire. I totally forgot what, though. Was it because of the issue about allowing a CAS OS to run on a non-CAS Nspire? TI would probably have a problem with that, since it could hurt their sales (instead of buying a Nspire CAS, people would buy the regular model, crack it then put a CAS OS on it, which is apparently doable because the hardware is exactly the same. When we buy a CAS Nspire, we pay for the software, mostly)
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Offline Lionel Debroux

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Re: Nspire 2.1 out, don't install it!
« Reply #128 on: July 18, 2010, 03:39:14 pm »
@Deflect: there are only two ways to factor the keys:
* trial factoring: even a billion computers working for several years would explore only an extremely tiny of the search space (~10^155 >> the estimated number of atoms in the universe), i.e. only extreme luck would get the factors;
* GNFS, the same algorithm as for 512-bit keys - but factoring a 1024-bit key is between one million (1e6) and one hundred million (1e8) times harder than factoring a 512-bit RSA key, way above the state of the art (768-bit RSA key, using unpublished algorithms made by the top researchers of the field and clusters of computers).
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Offline jnesselr

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Re: Nspire 2.1 out, don't install it!
« Reply #129 on: July 18, 2010, 03:53:35 pm »
yep. we might as well try using boinc, though.
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Offline TC01

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Re: Nspire 2.1 out, don't install it!
« Reply #130 on: July 18, 2010, 04:04:53 pm »
I think factoring the Nspire keys should wait until assembly hacks are available for the existing Nspire operating systems (1.7, 2.0, 2.1). Consider that it was only around ten years after release to factor the other calculator's keys- calculators that had either already been hacked for assembly support or had built-in assembly support.
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Offline Deflect

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Re: Nspire 2.1 out, don't install it!
« Reply #131 on: July 18, 2010, 04:08:32 pm »
Yeah, but why not at least start the factoring of the keys with boinc like we did last time, and eventually as computing power increases (Well GPUs are really the powerhouses now) we will have it .... ok still in a looong time, but at least eventually we'll have it!
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Offline critor

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Re: Nspire 2.1 out, don't install it!
« Reply #132 on: July 18, 2010, 04:13:34 pm »
There may be another way you haven't been thinking of, using the diagnostic menu from the TI-Nspire.

No, not the maintenance menu, the maintenance menu is just crap...


That menu:


What if there was a true "format" in the "1.Memory" this time? ;)

It's not easy launching it, though.


Enjoy! (in french, again)
http://tibank.forumactif.com/actualites-f25/une-nspire-qui-craque-t5809.htm

You may use the pictures, but please mention the source and make a link.
I'm going to make a big news and mention all the details with the data I'm collecting soon.
« Last Edit: July 18, 2010, 04:34:04 pm by critor »
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Offline TC01

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Re: Nspire 2.1 out, don't install it!
« Reply #133 on: July 18, 2010, 04:14:18 pm »
Quote from: Deflect on July 18, 2010, 04:08:32 pm
Yeah, but why not at least start the factoring of the keys with boinc like we did last time, and eventually as computing power increases (Well GPUs are really the powerhouses now) we will have it .... ok still in a looong time, but at least eventually we'll have it!
I don't disagree with that- I'm just saying that concentrating all the community's resources on it right now might not be a good idea. Because in the short term, hacking 1.7, or 2.0 or 2.1, will be much more beneficial. And probably easier/faster to do, too.
« Last Edit: July 18, 2010, 04:15:26 pm by TC01 »
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Offline apcalc

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Re: Nspire 2.1 out, don't install it!
« Reply #134 on: July 18, 2010, 04:40:40 pm »
critor, will this menu help in allowing downgrades?
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